package com.lqs.scaffold.util;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.json.JsonReadFeature;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.json.JsonMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.fasterxml.jackson.databind.type.CollectionType;
import com.fasterxml.jackson.databind.type.MapType;
import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
import com.fasterxml.jackson.module.paramnames.ParameterNamesModule;
import com.google.common.collect.Sets;
import com.lqs.scaffold.exception.JacksonException;
import org.apache.commons.lang3.BooleanUtils;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.Writer;
import java.lang.reflect.Type;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.net.URL;
import java.text.SimpleDateFormat;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

import static com.fasterxml.jackson.annotation.JsonInclude.Include.*;
import static com.fasterxml.jackson.core.JsonGenerator.Feature.*;
import static com.fasterxml.jackson.core.json.JsonReadFeature.*;
import static com.fasterxml.jackson.databind.DeserializationFeature.*;
import static com.fasterxml.jackson.databind.SerializationFeature.*;

/**
 * jackson工具类
 *
 * @author lqs
 * @date 2022/3/19
 * @see <a href="https://github.com/duanxinyuan/json-utils">https://github.com/duanxinyuan/json-utils</a>
 */
public class JacksonUtil {
	private static final Logger log = LoggerFactory.getLogger(JacksonUtil.class);
	private static  ObjectMapper mapper = initMapper();

	private static final Set<JsonReadFeature> JSON_READ_FEATURES_ENABLED = Sets.newHashSet(
		//允许在JSON中使用Java注释
		ALLOW_JAVA_COMMENTS,
		//允许 json 存在没用双引号括起来的 field
		ALLOW_UNQUOTED_FIELD_NAMES,
		//允许 json 存在使用单引号括起来的 field
		ALLOW_SINGLE_QUOTES,
		//允许 json 存在没用引号括起来的 ascii 控制字符
		ALLOW_UNESCAPED_CONTROL_CHARS,
		//允许 json number 类型的数存在前导 0 (例: 0001)
		ALLOW_LEADING_ZEROS_FOR_NUMBERS,
		//允许 json 存在 NaN, INF, -INF 作为 number 类型
		ALLOW_NON_NUMERIC_NUMBERS,
		//允许 只有Key没有Value的情况
		ALLOW_MISSING_VALUES,
		//允许数组json的结尾多逗号
		ALLOW_TRAILING_COMMA
	);


	static {
		try {
			//初始化
			mapper = initMapper();
		} catch (Exception e) {
			log.error("jackson config error", e);
		}
	}

	public static ObjectMapper initMapper() {
		JsonMapper.Builder builder = JsonMapper.builder().enable(JSON_READ_FEATURES_ENABLED.toArray(new JsonReadFeature[0]));
		return initMapperConfig(builder.build());
	}

	public static ObjectMapper initMapperConfig(ObjectMapper objectMapper) {
		String dateTimeFormat = TimeUtils.sStr;
		objectMapper.setDateFormat(new SimpleDateFormat(dateTimeFormat));
		//配置序列化级别
		objectMapper.setSerializationInclusion(NON_NULL);
		//配置JSON缩进支持
		objectMapper.configure(INDENT_OUTPUT, false);
		//允许单个数值当做数组处理
		objectMapper.enable(ACCEPT_SINGLE_VALUE_AS_ARRAY);
		//禁止重复键, 抛出异常
		objectMapper.enable(FAIL_ON_READING_DUP_TREE_KEY);
		//禁止使用int代表Enum的order()來反序列化Enum, 抛出异常
		objectMapper.enable(FAIL_ON_NUMBERS_FOR_ENUMS);
		//有属性不能映射的时候不报错
		objectMapper.disable(FAIL_ON_UNKNOWN_PROPERTIES);
		//对象为空时不抛异常
		objectMapper.disable(FAIL_ON_EMPTY_BEANS);
		//时间格式
		objectMapper.disable(WRITE_DATES_AS_TIMESTAMPS);
		//允许未知字段
		objectMapper.enable(IGNORE_UNKNOWN);
		//序列化BigDecimal时之间输出原始数字还是科学计数, 默认false, 即是否以toPlainString()科学计数方式来输出
		objectMapper.enable(JsonGenerator.Feature.WRITE_BIGDECIMAL_AS_PLAIN);
		//识别Java8时间
		objectMapper.registerModule(new ParameterNamesModule());
		objectMapper.registerModule(new Jdk8Module());
		JavaTimeModule javaTimeModule = new JavaTimeModule();
		javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(dateTimeFormat)))
			.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(dateTimeFormat)));
		objectMapper.registerModule(javaTimeModule);
		//识别Guava包的类
		//objectMapper.registerModule(new GuavaModule());
		return objectMapper;
	}

	public static ObjectMapper getObjectMapper() {
		return mapper;
	}

	/**
	 * JSON反序列化
	 */
	public static <V> V from(URL url, Class<V> type) {
		try {
			return mapper.readValue(url, type);
		} catch (IOException e) {
			throw new JacksonException("jackson from error, url: {}, type: {}", url.getPath(), type, e);
		}
	}

	/**
	 * JSON反序列化
	 */
	public static <V> V from(URL url, TypeReference<V> type) {
		try {
			return mapper.readValue(url, type);
		} catch (IOException e) {
			throw new JacksonException("jackson from error, url: {}, type: {}", url.getPath(), type, e);
		}
	}

	/**
	 * JSON反序列化（List）
	 */
	public static <V> List<V> fromList(URL url, Class<V> type) {
		try {
			CollectionType collectionType = mapper.getTypeFactory().constructCollectionType(ArrayList.class, type);
			return mapper.readValue(url, collectionType);
		} catch (IOException e) {
			throw new JacksonException("jackson from error, url: {}, type: {}", url.getPath(), type, e);
		}
	}

	/**
	 * JSON反序列化
	 */
	public static <V> V from(InputStream inputStream, Class<V> type) {
		try {
			return mapper.readValue(inputStream, type);
		} catch (IOException e) {
			throw new JacksonException("jackson from error, type: {}", type, e);
		}
	}

	/**
	 * JSON反序列化
	 */
	public static <V> V from(InputStream inputStream, TypeReference<V> type) {
		try {
			return mapper.readValue(inputStream, type);
		} catch (IOException e) {
			throw new JacksonException("jackson from error, type: {}", type, e);
		}
	}

	/**
	 * JSON反序列化（List）
	 */
	public static <V> List<V> fromList(InputStream inputStream, Class<V> type) {
		try {
			CollectionType collectionType = mapper.getTypeFactory().constructCollectionType(ArrayList.class, type);
			return mapper.readValue(inputStream, collectionType);
		} catch (IOException e) {
			throw new JacksonException("jackson from error, type: {}", type, e);
		}
	}

	/**
	 * JSON反序列化
	 */
	public static <V> V from(File file, Class<V> type) {
		try {
			return mapper.readValue(file, type);
		} catch (IOException e) {
			throw new JacksonException("jackson from error, file path: {}, type: {}", file.getPath(), type, e);
		}
	}

	/**
	 * JSON反序列化
	 */
	public static <V> V from(File file, TypeReference<V> type) {
		try {
			return mapper.readValue(file, type);
		} catch (IOException e) {
			throw new JacksonException("jackson from error, file path: {}, type: {}", file.getPath(), type, e);
		}
	}

	/**
	 * JSON反序列化（List）
	 */
	public static <V> List<V> fromList(File file, Class<V> type) {
		try {
			CollectionType collectionType = mapper.getTypeFactory().constructCollectionType(ArrayList.class, type);
			return mapper.readValue(file, collectionType);
		} catch (IOException e) {
			throw new JacksonException("jackson from error, file path: {}, type: {}", file.getPath(), type, e);
		}
	}

	/**
	 * JSON反序列化
	 */
	public static <V> V from(String json, Class<V> type) {
		return from(json, (Type) type);
	}

	/**
	 * JSON反序列化
	 */
	public static <V> V from(String json, TypeReference<V> type) {
		return from(json, type.getType());
	}

	/**
	 * JSON反序列化
	 */
	public static <V> V from(String json, Type type) {
		if (StringUtils.isEmpty(json)) {
			return null;
		}
		try {
			JavaType javaType = mapper.getTypeFactory().constructType(type);
			return mapper.readValue(json, javaType);
		} catch (IOException e) {
			throw new JacksonException("jackson from error, json: {}, type: {}", json, type, e);
		}
	}

	/**
	 * JSON反序列化（List）
	 */
	public static <V> List<V> fromList(String json, Class<V> type) {
		if (StringUtils.isEmpty(json)) {
			return null;
		}
		try {
			CollectionType collectionType = mapper.getTypeFactory().constructCollectionType(ArrayList.class, type);
			return mapper.readValue(json, collectionType);
		} catch (IOException e) {
			throw new JacksonException("jackson from error, json: {}, type: {}", json, type, e);
		}
	}

	/**
	 * JSON反序列化（Map）
	 */
	public static Map<String, Object> fromMap(String json) {
		if (StringUtils.isEmpty(json)) {
			return null;
		}
		try {
			MapType mapType = mapper.getTypeFactory().constructMapType(HashMap.class, String.class, Object.class);
			return mapper.readValue(json, mapType);
		} catch (IOException e) {
			throw new JacksonException("jackson from error, json: {}, type: {}", json, e);
		}
	}

	/**
	 * 序列化为JSON
	 */
	public static <V> String to(List<V> list) {
		try {
			return mapper.writeValueAsString(list);
		} catch (JsonProcessingException e) {
			throw new JacksonException("jackson to error, data: {}", list, e);
		}
	}

	/**
	 * 序列化为JSON
	 */
	public static <V> String to(V v) {
		try {
			return mapper.writeValueAsString(v);
		} catch (JsonProcessingException e) {
			throw new JacksonException("jackson to error, data: {}", v, e);
		}
	}

	/**
	 * 序列化为JSON
	 */
	public static <V> void toFile(String path, List<V> list) {
		try (Writer writer = new FileWriter(new File(path), true)) {
			mapper.writer().writeValues(writer).writeAll(list);
		} catch (Exception e) {
			throw new JacksonException("jackson to file error, path: {}, list: {}", path, list, e);
		}
	}

	/**
	 * 序列化为JSON
	 */
	public static <V> void toFile(String path, V v) {
		try (Writer writer = new FileWriter(new File(path), true)) {
			mapper.writer().writeValues(writer).write(v);
		} catch (Exception e) {
			throw new JacksonException("jackson to file error, path: {}, data: {}", path, v, e);
		}
	}

	/**
	 * 从json串中获取某个字段
	 *
	 * @return String，默认为 null
	 */
	public static String getAsString(String json, String key) {
		if (StringUtils.isEmpty(json)) {
			return null;
		}
		try {
			JsonNode jsonNode = getAsJsonObject(json, key);
			if (null == jsonNode) {
				return null;
			}
			return getAsString(jsonNode);
		} catch (Exception e) {
			throw new JacksonException("jackson get string error, json: {}, key: {}", json, key, e);
		}
	}

	private static String getAsString(JsonNode jsonNode) {
		return jsonNode.isTextual() ? jsonNode.textValue() : jsonNode.toString();
	}

	/**
	 * 从json串中获取某个字段
	 *
	 * @return int，默认为 0
	 */
	public static int getAsInt(String json, String key) {
		if (StringUtils.isEmpty(json)) {
			return 0;
		}
		try {
			JsonNode jsonNode = getAsJsonObject(json, key);
			if (null == jsonNode) {
				return 0;
			}
			return jsonNode.isInt() ? jsonNode.intValue() : Integer.parseInt(getAsString(jsonNode));
		} catch (Exception e) {
			throw new JacksonException("jackson get int error, json: {}, key: {}", json, key, e);
		}
	}

	/**
	 * 从json串中获取某个字段
	 *
	 * @return long，默认为 0
	 */
	public static long getAsLong(String json, String key) {
		if (StringUtils.isEmpty(json)) {
			return 0L;
		}
		try {
			JsonNode jsonNode = getAsJsonObject(json, key);
			if (null == jsonNode) {
				return 0L;
			}
			return jsonNode.isLong() ? jsonNode.longValue() : Long.parseLong(getAsString(jsonNode));
		} catch (Exception e) {
			throw new JacksonException("jackson get long error, json: {}, key: {}", json, key, e);
		}
	}

	/**
	 * 从json串中获取某个字段
	 *
	 * @return double，默认为 0.0
	 */
	public static double getAsDouble(String json, String key) {
		if (StringUtils.isEmpty(json)) {
			return 0.0;
		}
		try {
			JsonNode jsonNode = getAsJsonObject(json, key);
			if (null == jsonNode) {
				return 0.0;
			}
			return jsonNode.isDouble() ? jsonNode.doubleValue() : Double.parseDouble(getAsString(jsonNode));
		} catch (Exception e) {
			throw new JacksonException("jackson get double error, json: {}, key: {}", json, key, e);
		}
	}

	/**
	 * 从json串中获取某个字段
	 *
	 * @return BigInteger，默认为 0.0
	 */
	public static BigInteger getAsBigInteger(String json, String key) {
		if (StringUtils.isEmpty(json)) {
			return new BigInteger(String.valueOf(0.00));
		}
		try {
			JsonNode jsonNode = getAsJsonObject(json, key);
			if (null == jsonNode) {
				return new BigInteger(String.valueOf(0.00));
			}
			return jsonNode.isBigInteger() ? jsonNode.bigIntegerValue() : new BigInteger(getAsString(jsonNode));
		} catch (Exception e) {
			throw new JacksonException("jackson get big integer error, json: {}, key: {}", json, key, e);
		}
	}

	/**
	 * 从json串中获取某个字段
	 *
	 * @return BigDecimal，默认为 0.00
	 */
	public static BigDecimal getAsBigDecimal(String json, String key) {
		if (StringUtils.isEmpty(json)) {
			return new BigDecimal("0.00");
		}
		try {
			JsonNode jsonNode = getAsJsonObject(json, key);
			if (null == jsonNode) {
				return new BigDecimal("0.00");
			}
			return jsonNode.isBigDecimal() ? jsonNode.decimalValue() : new BigDecimal(getAsString(jsonNode));
		} catch (Exception e) {
			throw new JacksonException("jackson get big decimal error, json: {}, key: {}", json, key, e);
		}
	}

	/**
	 * 从json串中获取某个字段
	 *
	 * @return boolean, 默认为false
	 */
	public static boolean getAsBoolean(String json, String key) {
		if (StringUtils.isEmpty(json)) {
			return false;
		}
		try {
			JsonNode jsonNode = getAsJsonObject(json, key);
			if (null == jsonNode) {
				return false;
			}
			if (jsonNode.isBoolean()) {
				return jsonNode.booleanValue();
			} else {
				if (jsonNode.isTextual()) {
					String textValue = jsonNode.textValue();
					if ("1".equals(textValue)) {
						return true;
					} else {
						return BooleanUtils.toBoolean(textValue);
					}
				} else {//number
					return BooleanUtils.toBoolean(jsonNode.intValue());
				}
			}
		} catch (Exception e) {
			throw new JacksonException("jackson get boolean error, json: {}, key: {}", json, key, e);
		}
	}

	/**
	 * 从json串中获取某个字段
	 *
	 * @return byte[], 默认为 null
	 */
	public static byte[] getAsBytes(String json, String key) {
		if (StringUtils.isEmpty(json)) {
			return null;
		}
		try {
			JsonNode jsonNode = getAsJsonObject(json, key);
			if (null == jsonNode) {
				return null;
			}
			return jsonNode.isBinary() ? jsonNode.binaryValue() : getAsString(jsonNode).getBytes();
		} catch (Exception e) {
			throw new JacksonException("jackson get byte error, json: {}, key: {}", json, key, e);
		}
	}

	/**
	 * 从json串中获取某个字段
	 *
	 * @return object, 默认为 null
	 */
	public static <V> V getAsObject(String json, String key, Class<V> type) {
		if (StringUtils.isEmpty(json)) {
			return null;
		}
		try {
			JsonNode jsonNode = getAsJsonObject(json, key);
			if (null == jsonNode) {
				return null;
			}
			JavaType javaType = mapper.getTypeFactory().constructType(type);
			return from(getAsString(jsonNode), javaType);
		} catch (Exception e) {
			throw new JacksonException("jackson get list error, json: {}, key: {}, type: {}", json, key, type, e);
		}
	}


	/**
	 * 从json串中获取某个字段
	 *
	 * @return list, 默认为 null
	 */
	public static <V> List<V> getAsList(String json, String key, Class<V> type) {
		if (StringUtils.isEmpty(json)) {
			return null;
		}
		try {
			JsonNode jsonNode = getAsJsonObject(json, key);
			if (null == jsonNode) {
				return null;
			}
			CollectionType collectionType = mapper.getTypeFactory().constructCollectionType(ArrayList.class, type);
			return from(getAsString(jsonNode), collectionType);
		} catch (Exception e) {
			throw new JacksonException("jackson get list error, json: {}, key: {}, type: {}", json, key, type, e);
		}
	}

	/**
	 * 从json串中获取某个字段
	 *
	 * @return JsonNode, 默认为 null
	 */
	public static JsonNode getAsJsonObject(String json, String key) {
		try {
			JsonNode node = mapper.readTree(json);
			if (null == node) {
				return null;
			}
			return node.get(key);
		} catch (IOException e) {
			throw new JacksonException("jackson get object from json error, json: {}, key: {}", json, key, e);
		}
	}

	/**
	 * 向json中添加属性
	 *
	 * @return json
	 */
	public static <V> String add(String json, String key, V value) {
		try {
			JsonNode node = mapper.readTree(json);
			add(node, key, value);
			return node.toString();
		} catch (IOException e) {
			throw new JacksonException("jackson add error, json: {}, key: {}, value: {}", json, key, value, e);
		}
	}

	/**
	 * 向json中添加属性
	 */
	private static <V> void add(JsonNode jsonNode, String key, V value) {
		if (value instanceof String) {
			((ObjectNode) jsonNode).put(key, (String) value);
		} else if (value instanceof Short) {
			((ObjectNode) jsonNode).put(key, (Short) value);
		} else if (value instanceof Integer) {
			((ObjectNode) jsonNode).put(key, (Integer) value);
		} else if (value instanceof Long) {
			((ObjectNode) jsonNode).put(key, (Long) value);
		} else if (value instanceof Float) {
			((ObjectNode) jsonNode).put(key, (Float) value);
		} else if (value instanceof Double) {
			((ObjectNode) jsonNode).put(key, (Double) value);
		} else if (value instanceof BigDecimal) {
			((ObjectNode) jsonNode).put(key, (BigDecimal) value);
		} else if (value instanceof BigInteger) {
			((ObjectNode) jsonNode).put(key, (BigInteger) value);
		} else if (value instanceof Boolean) {
			((ObjectNode) jsonNode).put(key, (Boolean) value);
		} else if (value instanceof byte[]) {
			((ObjectNode) jsonNode).put(key, (byte[]) value);
		} else {
			((ObjectNode) jsonNode).put(key, to(value));
		}
	}

	/**
	 * 除去json中的某个属性
	 *
	 * @return json
	 */
	public static String remove(String json, String key) {
		try {
			JsonNode node = mapper.readTree(json);
			((ObjectNode) node).remove(key);
			return node.toString();
		} catch (IOException e) {
			throw new JacksonException("jackson remove error, json: {}, key: {}", json, key, e);
		}
	}

	/**
	 * 修改json中的属性
	 */
	public static <V> String update(String json, String key, V value) {
		try {
			JsonNode node = mapper.readTree(json);
			((ObjectNode) node).remove(key);
			add(node, key, value);
			return node.toString();
		} catch (IOException e) {
			throw new JacksonException("jackson update error, json: {}, key: {}, value: {}", json, key, value, e);
		}
	}

	/**
	 * 格式化Json(美化)
	 *
	 * @return json
	 */
	public static String format(String json) {
		try {
			JsonNode node = mapper.readTree(json);
			return mapper.writerWithDefaultPrettyPrinter().writeValueAsString(node);
		} catch (IOException e) {
			throw new JacksonException("jackson format json error, json: {}", json, e);
		}
	}

	/**
	 * 判断字符串是否是json
	 *
	 * @return json
	 */
	public static boolean isJson(String json) {
		try {
			mapper.readTree(json);
			return true;
		} catch (Exception e) {
			return false;
		}
	}


}
